[Dancer-users] detailed logs, not

Puneet Kishor punk.kish at gmail.com
Tue Jan 4 17:26:17 CET 2011

Maurice Mengel wrote:
> two vague ideas
> are you sure you are not overwriting those logging settings in the
> environment file?

What is the "environment file"? As far as I know, I don't have any.

> And, I just found helpful error messages in error_log created by my
> apache. In other words, maybe there is a deployment specific error log
> somewhere in your setup (even if you are using a different deployment
> method).

Well, as I mentioned in my email, there are a few errors that do show up 
in the app-error_log generated by Apache. However, I can't figure out 
any pattern to which errors show up there and which don't. I guess it 
has to do with what traps the error.

For example, the last error in my app-error_log is from last night

	[Mon Jan 03 22:08:14 2011] [error]...

I had made a typo, and it was caught at compile time. I am assuming the 
run time errors are getting lost in the ether. I have had lots of errors 
since last night (for example, the aforementioned wrong permission on a 
directory I was trying to write into). None of those show up anywhere... 
not in the Apache log, not in occasional errors returned in Firebug, and 
not in development.log.

> best
> maurice
> On Tue, Jan 4, 2011 at 8:48 AM, Puneet Kishor<punk.kish at gmail.com>  wrote:
>> This is befuddling. My config files has the following incantation
>> config.yml
>> ---------------------
>> logger      : "file"
>> development.yml
>> ---------------------
>> log         : "debug"
>> warnings    : 1
>> show_errors : 1
>> Yet, no detailed warnings or errors are shown anywhere. If I add a specific
>> debug statement, then that shows up in the "development.log." A few warnings
>> do show up from time to time in the Apache log. I can't place a pattern on
>> it -- some kinds of errors show up in the Apache log, some, at times, are
>> returned in the http response and are visible in Firebug, and some don't
>> show up at all.
>> For example, I had the following simple
>>         open my $fh, ">", $file or die "$file: $!\n";
>> There was a permission problem, and the `open` command was die-ing, but the
>> error was not visible anywhere. I changed the line to
>>         open my $fh, ">", $file or debug "$file: $!\n";
>> and I got the error "permission denied" in my development.log.
>> The above is a simple instance. I am actually using PDL (Perl Data Language)
>> for munging through large datasets to display in the web application. None
>> of my PDL errors are showing up in any log. The only alternative for me is
>> to very tediously insert the `debug` command in different places until I
>> determine what command is breaking.
>> Any suggestions on how I could get detailed warnings and errors consistently
>> in one place?

Puneet Kishor http://punkish.org
Carbon Model http://carbonmodel.org
Charter Member, Open Source Geospatial Foundation http://www.osgeo.org
Science Fellow http://creativecommons.org/about/people/fellows#puneetkishor
Nelson Institute, UW-Madison http://www.nelson.wisc.edu
Assertions are politics; backing up assertions with evidence is science

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